A method of producing colorful noodles, comprising: providing pretreated dough and a pressing machine. The pretreated dough comprises an anthocyanin solution and a protein-content modified or removed flour. Mixing the anthocyanin solution and the flour to obtain dough. Then pressing the dough by the pressing machine to form plurality of noodles with a first color. Putting the noodles in an environment and changing the pH of the environment to discolor the noodles. The noodles with a second color make it more colorful and vivid.一種變色麵條之製作方法,包含:提供一預處理麵團及一壓麵機,該預處理麵團包含一花青素溶液及去除或調整蛋白質含量之一麵粉,並均勻混合該花青素溶液及該麵粉,以獲得一麵團,接著以該壓麵機擠壓該麵團,使該麵團形成複數條麵條,且該等麵條具有一第一顏色,將該等麵條置於一環境中,並改變環境pH值使該等麵條變色,使該等麵條具有一第二顏色,讓麵條顏色更加鮮豔多變。無
